In my understanding and taking a reasoning upon this thought you have shared Sir, I now understand the true meaning of working hard. That means working a little more than others and making more income out of that. That is productivity. Others might not go that far and they can't make the extra earning.
Thank you for sharing this insight.
Putting a solid effort into what we do in our professional lives will often repay us well, even if that comes in the form of the satisfaction from doing a good job.